As there is always some difference in the ambient temperatures during testing, it's interesting to see what changes in
order the reference heatsinks take with the heatsink being tested. In this
case I think things are going to stay pretty much the same.

The AVC 112C81 is
essentially a retrofitted extrusion heatsink which has been upgraded with a copper core. The addition of that copper, and AMD approval should guarantee that we are not looking at an OEM performance level heatsink, but more of a good performer.

Rise Above Ambient
Temp. (c)

Mfg.

Model

27mm large copper block

15mm small copper block

27mm large copper block

15mm small copper block

50W

50W

100W

100W

Coolink

U1P2

13.3

19.8

26.8

36.1

Thermal Integration

TI-V77L

12.6

17.9

31.0

37.1

Arkua

628

18.8

18.2

35.0

38.4

Coolink

U2P

13.5

20.5

28.2

40.5

Sibak

AC02625B

18.1

35.8

20.0

41.5

Coolink

H2T

17.4

21.9

33.7

43.8

Sibak

AC06725TH

20.4

23.7

39.2

45.2

Vantec

CCK-6027D

18.0

22.2

37.5

46.0

Coolink

U1L2

16.2

25.0

31.8

46.1

Coolermaster

HHC-001

18.3

23.1

34.3

46.4

Tocools

Crown

15.6

30.0

24.7

47.0

Dynatron

DY1206BH-625

16.8

31.9

24.4

47.2

Coolink

U2L

18.5

25.5

35.6

48.9

AVC

Tundra2

19.4

26.5

37.0

49.1

Ajigo

MF014-021

19.8

26.2

37.8

50.7

AVC

112C81

20.8

26.1

40.4

51.2

Ajigo

SF017-011

20.3

27.9

38.5

51.7

NengTyi

XPC5000

22.6

25.2

45.2

52.2

Titan

TTC-CU5TB

22.0

27.0

37.6

52.2

Coolink

H1T

22.1

26.5

42.3

52.8

Coolermaster

HSC-V62

26.0

31.4

40.3

53.1

Zalman

CNPS6000-Cu

21.6

29.0

40.8

53.4

Spire

5F263

22.1

29.2

41.7

53.6

Taisol

CGK760092

19.3

37.8

27.9

54.1

AVC

112AM1

21.8

28.1

45.3

54.8

Spire

5T235

20.7

28.0

40.5

55.8

Sibak

AE01625B

17.3

30.9

33.6

57.5

Thermaltake

Volcano 6cu+

13.8

28.8

32.1

57.9

Coolermaster

HHC-L61

25.7

26.8

49.7

60.8

JMC Products

400023

21.3

42.0

32.1

62.0

Sibak

AT01515B

22.1

41.6

37.1

72.2

Verax

P11T

35.1

43.6

64.8

76.6

Verax

P14

30.8

41.3

55.5

75.1

50W

50W

100W

100W

True to form, the AVC 112C81 is able to produce some very
respectable performance levels; in fact, coming quite close to the levels that the AVC
Tundra 2 was able to attain. The copper core in the 112C81 adds that extra
amount of surface area for the aluminum extrusion to make contact with - that that means heat energy is spread out over
a larger area so that more fins are being used for cooling. The alternative
may have been just a hot-spot at the center of the extrusion, which obviously would
have been directly under the motor of the fan and doing no one any good.

AVC
have let us know that they are
actively making the transition from supplying OEM coolers to supplying consumers with heatsinks
that work well. While the AVC 112C81 is certainly fine for your average AMD AthlonXP running at stock speeds,
I don't think it has the cooling capacity to satisfy any level of performance overclocker.

My only request for this heatsink would be for it to use all three
clips on the socket instead of just one. There are too many stories out there of broken socket clips, and use
of all three in this instance would be good for everyone. Otherwise, the AVC 112C81 is a heatsink.